Portable wheel chock unit



FIG. 1 is a top plan view of a portable wheel chock unit showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a bottom front perspective view thereof with _the smaller chock partially slidably inserted into the hollow _of the larger chock for transportation and storage;

FIG. 8 is a top left side perspective view thereof with the chocks spaced closer together; and

FIG. 9 is a top, front, right side perspective view of a portable wheel chock unit showing a second embodiment of my new design, the sole difference resides in the triangular cross sectional shape thereof it being understood that the smaller chock is in its stored condition within the hollow of the larger chock shown. 

The ornamental design for a portable wheel chock unit, substantially as shown and described. 